Cita APA (7th ed.)

Birdsall, N., Kelley, A. C., & Sinding, S. W. (2001). Population matters: Demographic change, economic growth, and poverty in the developing world. Oxford University Press.

Cita Chicago (17th ed.)

Birdsall, Nancy, Allen C. Kelley, i Steven W. Sinding. Population Matters: Demographic Change, Economic Growth, and Poverty in the Developing World. New York: Oxford University Press, 2001.

Cita MLA (9th ed.)

Birdsall, Nancy, et al. Population Matters: Demographic Change, Economic Growth, and Poverty in the Developing World. Oxford University Press, 2001.